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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for August 3rd, 2020

Not sure why, but ESXi 6.5 changed “uuid.location”, “uuid.bios” and “ethernet0.generatedAddress” after moving it to a different datastore

Posted by jpluimers on 2020/08/03

When rearranging storage locations, I had to move a few VMs to different data stores.

So I removed them from the inventory, moved them to another datastore, then re-added them as a set.

Besides getting new VM IDs (which I expected), ESXi 6.5 U1 also managed to change the below fields (which I did not expect) without a warning like “did you move or copy” which you get when moving VMs around on VMware Fusion (Mac OS X) and VMware Workstation/Player (Windows).

The bold values were changed from:

uuid.location = "56 4d 6f 23 aa 92 bf 2b-16 d9 9a 4b 95 4d e7 8e"
uuid.bios = "56 4d 02 3c ea 9e dc 12-18 4f a4 64 c1 f7 f0 fe"
ethernet0.generatedAddress = "00:0c:29:f7:f0:fe"

To:

uuid.location = "56 4d 4c e8 a3 81 c6 db-d6 f2 7f 32 0d fe 2e 29"
uuid.bios = "56 4d 4c e8 a3 81 c6 db-d6 f2 7f 32 0d fe 2e 29"
ethernet0.generatedAddress = "00:0c:29:fe:2e:29"

The bold-italic values correspond to the changed MAC address.

This caused the VMs (which were suspended before the move) to loose their MAC bound static DHCP addresses after the lease time expired: since the new MAC addresses were not statically bound, they got fresh ones causing all sorts of connection problems.

Trying to assign back the original MAC address in the Web UI by hand gets you this error when the virtual machine starts (not when you save the MAC address):

Invalid MAC address specified.
xx:xx:xx:xx:xx:xx is not a valid static Ethernet address. It conflicts with VMware reserved MACs for other usage.

What I did was

  1. suspend the machines.
  2. bring ESXi into maintenance mode,
  3. changed the values back,
  4. moved ESXI out of maintenance mode,
  5. then unsuspended the VMs one by one
    now I did get the “I moved it” versus “I copied it” question

For this particular machine, the uuid.location was still changed, but now uuid.bios and ethernet0.generatedAddress were now left in tact:

uuid.location = "56 4d 4c e8 a3 81 c6 db-d6 f2 7f 32 0d fe 2e 29"
uuid.bios = "56 4d 02 3c ea 9e dc 12-18 4f a4 64 c1 f7 f0 fe"
ethernet0.generatedAddress = "00:0c:29:f7:f0:fe"

On another VM that I moved between data stores, after confirming the “I Moved It”, the migration went OK, so I am not sure about the cause. In that case the before/after situation were these (only the bold values were changed):

uuid.location = "56 4d d5 e2 79 b4 a6 76-aa 13 3d 18 e5 4d c0 00"
uuid.bios = "56 4d 38 d7 9c a0 98 24-3c e4 79 00 54 5d 35 ef"
vc.uuid = "52 91 00 37 03 ed 87 34-ec 06 ba 28 f6 85 b4 29"

uuid.location = "56 4d 88 e6 a0 17 bb 01-cb 8c e3 ce fa e8 05 61"
uuid.bios = "56 4d 38 d7 9c a0 98 24-3c e4 79 00 54 5d 35 ef"
vc.uuid = "52 91 00 37 03 ed 87 34-ec 06 ba 28 f6 85 b4 29"

Conclusion

The uuid.bios directly affects the generatedAddress of the network adapters. Initially it is related to the uuid.location, but does not need to be.

When migrating, keep the old data for comparison: compare the .vmx files after starting the migrated machine, and correct the uuid.bios and various ethernet#.generatedAddress values when needed.

Besides the well known 00:50:56:XX:YY:ZZ MAC address range there is also 00:0c:29:XX:YY:ZZ.

Background reading

–jeroen

Posted in ESXi6.5, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »

Using telnet from the VMware 5.x and 6.x ESXi shell: use nc

Posted by jpluimers on 2020/08/03

The short answer is: you can’t use telnet. But you can use alternatives, obviously. For instance, to troubleshoot some iSCSI connectivity problems, you would be used to doing something as this. ~ # telnet 10.0.2.3 3260 -ash: telnet: not found Instead, you can use netcat to test the connectivity. ~ # nc -z 10.0.2.3 3260 […]

Source: [Archive.is/WayBackUsing telnet from the VMware 5.x ESXi shell

The VMware knowledgebase mentions a few other alternatives as well (of which telnet obviously does not work):

–jeroen

Posted in ESXi5.1, ESXi5.5, ESXi6, ESXi6.5, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »

Dutch public broadcast Teletext in plain text: Tekst TT

Posted by jpluimers on 2020/08/03

This page always has the Dutch public broadcast teletekst page 101 in plain text: Tekst TT.

It is sources from the teletext mode teletekst.nl, which usually is the fastest fact checked public news source in The Netherlands.

[WayBack] Tekst TT FAQ:


■ Dit is NOS Teletekst 101 in platte tekst. Het belangrijkste nieuws van Nederland, zonder opsmuk, snel en actueel. Handig voor op je iPhone/Android onderweg.

■ Deze pagina’s worden automatisch uit openbare bronnen samengesteld. Soms hikt er iets. En zie je nog minder. Maar minder is meer!

■ Sportnieuws gaat nog niet altijd goed. Met het huidige beperkte aanbod sport in de media is dit een probleem dat alle prioriteit heeft.

■ Contact krijg je via info@teletek.st of volg @TTCAPS voor echt ouderwets brekend nieuws.

–jeroen

Posted in History, LifeHacker, Power User | Leave a Comment »

Gratis accu bij accu tuin- en parkmachines (verlengd t/m augustus) | Makita.nl

Posted by jpluimers on 2020/08/03

Reminder to self

Wayback Gratis accu bij accu tuin- en parkmachines (verlengd t/m augustus) | Makita.nl

Claim hier je gratis accu (accu tuin- en parkmachine)

Van 1 mei tot en met 31 augustus 2020 ontvang je een gratis accu (BL1850B) bij aankoop van een accu tuin- en parkmachine.

Hoe vraag je die gratis accu aan?

Heel eenvoudig: registreer je aankoop en Makita verstuurt de accu binnen 5 weken.

Ben je een particulier? Registreer [Wayback] hier je aankoop.

Ben je een zakelijke klant? Registreer [Wayback] hier je aankoop.


Machinelijst
Wil je weten welke machines meedoen aan de actie, klik [Wayback] hier voor de complete lijst. Bekijk [Waybackhier de actievoorwaarden.

* Registreren kan nog t/m 30 september 2020.

–jeroen

Posted in LifeHacker, Power User | Leave a Comment »

 
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